Trichiasis

Trichiasis

 

Trichiasis is a common eyelid abnormality in which the eyelashes are misdirected and grow inwards toward the eye.

 

Those inward-turning lashes rub against the cornea (the clear, dome-like window covering the colored iris and the pupil), the conjunctiva (the thin, clear membrane covering the sclera, which is the white part of the eye) and the inner surface of the eyelids, irritating the eye.